ATI RN
Urinary System Test Questions And Answers Questions
Question 1 of 5
The functional unit of the kidney is called a
Correct Answer: B
Rationale: Nephron (filtration to excretion) is the functional unit not glomerulus (part), corpuscle (subset), or calyx (collecting). This defines renal unit, key for physiology, contrasting with components.
Question 2 of 5
Somatic motor neurons must be ________ to relax the external urethral sphincter to allow urination.
Correct Answer: A
Rationale: Stimulating somatic neurons relaxes the external sphincter (voluntary) not inhibiting (contracts). This defines micturition control, key for continence, contrasting with inhibition.
Question 3 of 5
Production of urine to modify plasma makeup is the result of ________.
Correct Answer: D
Rationale: Urine forms via filtration, reabsorption (absorption), and secretion all apply. This encompasses urine production, critical for homeostasis, contrasting with single processes.
Question 4 of 5
Which step in vitamin D production does the kidney perform?
Correct Answer: B
Rationale: Kidneys convert calcidiol to calcitriol (active) not cholecalciferol (liver), storage, or none. This defines renal role, critical for calcium, contrasting with hepatic steps.
Question 5 of 5
The middle layer of the urinary bladder is identified as ___________.
Correct Answer: B
Rationale: Bladder's middle layer is submucosa (connective) not mucosa (inner), muscularis (outer), or sphincter (none). This defines histology, critical for structure, contrasting with other layers.